Since most of these seem to be parents or grandparents letters to their children or grandchildren, they're not supposed to be all-weather advice. If you have kids, you understand the morals and priorities that you attempted to raise them with, therefore you will speak to that shared understanding.
If you're trying to say "different people in different situations have different requirements"...
The title says "every parent". Explaining why the advice needs to drastically change for certain situations is quite helpful. You should not be so dismissive.
If you read the template they link to you would see that it's really a blank slate - more a placeholder for the conversation every parent needs to have with their children around money, relevant to that families reality.
If you're trying to say "different people in different situations have different requirements"...
Yes, we know that. And?